Originally Posted by vinniekq2
If the engine is old its nice to have as much breathing as possible
I agree. The oil coming out of the breather is evidence you are getting blow by because of the wear on your rings/cylinders. If you block it off, you might cause gaskets to leak.
I would look for something to replace the mesh filter. A replacement breather (or filter element) might slow down the amount of oil out of the breather.